Dyeing wastewater treatment works, Zhangzhou wastewater, rich students provided by the Guangzhou Environmental Protection Engineering Co., rich students. Environmental Protection Engineering Co., Ltd. Guangzhou Fu students (www.fsyhb.com) is specialized in the "sewage treatment equipment, water purification equipment, dust noise cancellation equipment, sterilization equipment, solid waste handling equipment," the enterprise, the company of "honesty, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Hu big reed. With the deepening of the process of industrialization, global environmental pollution is increasingly destroying the ecological balance of the Earth's biosphere formed hundreds of millions of years, and pose a threat to the living environment of human beings. According to the State Environmental Protection Administration of the status quo of China's water pollution statistics and surveys, our rivers, lakes and coastal watershed has generally been subject to different degrees of pollution, worsening trend showing the whole, the main factors aggravating the pollution of industrial wastewater and domestic sewage . Textile industry emit large quantities of waste water and waste on the environment pollution in the production process wastewater, wastewater and dyeing industry in which the production process emissions of the most serious environmental pollution. According to incomplete statistics, the national day of dyeing wastewater emissions (3-4) × 106m3, accounting for 35% of the country's total emissions of industrial waste water, and a 1% growth rate year after year. Entrainment of wastewater containing wood fiber material itself, and the slurry oil, dyes and processes using chemical additives, etc., having a high biochemical oxygen demand, high color, pH value is high, biodegradation, many changes "three high a difficult one change" feature. Wastewater residual dye component, even in small concentrations, into the water body can also cause water transmittance and lower gas solubility in water, the water will affect the growth of a variety of organisms, thereby undermining the purity of water and aquatic food chain, will eventually lead to the destruction of water ecosystems. Therefore, bleaching and dyeing industrial wastewater governance issues, domestic and foreign environmental engineering has become an urgent need to solve a major problem. Rich students Xingtan dyeing wastewater treatment project focused physics dyeing wastewater treatment method - Coagulation Coagulation is adding flocculants in wastewater contaminants such as particles agglomerate to make physical treatment flocculation precipitate is removed from the dyeing wastewater treatment works, has been widely used is a printing and dyeing wastewater treatment technology. Coagulation process mechanism is based on colloid chemistry DLVO theory is based coagulant hydrolysis, polymerization and other chemical reactions in the water first, the hydrolysis and polymerization products then static neutralization and wastewater particles occurs, intergranular frame bridge, adhesion volumes role coarse sweep floc then by sedimentation removed. In practical applications, mainly by coagulation and sedimentation and flotation methods. Flocculant selection is the key professional printing and dyeing wastewater treatment plants, commonly used coagulant mainly inorganic flocculants, organic flocculants, flocculants and biological composite flocculant. (1) inorganic coagulant include aluminum and iron salts series. Aluminum inorganic flocculants include aluminum sulfate, aluminum chloride, aluminum sulfate and aluminum chloride and other polymerization; inorganic flocculants include ferric iron sulfate, ferrous sulfate, ferric chloride, iron chloride PFS and aggregation; The most widely used inorganic coagulant is aluminum flocculant. (2) the performance of organic polymer flocculant has bleaching and dyeing factory to handle wastewater, flocculation stable, fast growth, less residue, a wide pH range and so on. Synthetic organic polymer flocculant main varieties: quaternary ammonium cationic polyacrylamide, poly acid, chlorinated poly dimethyl diallyl press, polyamines, such as: natural polymer flocculants include: cationic modified starch . Guangzhou Fu students focused on environmental Xingtan dyeing wastewater treatment works (3600m3 / d):